Printing press



Oct. 25, 1932. Mjw. BRUESHABER l 1,884,556

PRINTING PRESS Y Filed Sept. 28. 1929 2v Sheets-Sheet l 2d j; l

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Oct. 25, 1932. i M w BRUESHABER 1,884,556

PRINTING PRESS Filed Sept. 28. 1929 2 Sheets-Sheet 2 @gm-TLM Patented Oct. 25, 1932 narran STATES PATENT orifice MARTIN W. BRUESHABER, OF RIVER FOREST, ILLINOIS, ASSIGNOR TO THE GOSS PRINTING ERESS CO., 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS PRINTING PRESS Application led September 28, 1929. Serial VNo. 395,?94.

My invention relates to printing presses and it has for its object the provision of a new and improved form and arrangement of parts by which a form cylinder or an 1mpression cylinder constituting one of the members of a printing couple may be held rotatably in position without tolerance or play toward and from the other member of the couple. This result is effected prefc erabily by the use of a plurality of supporting or pressure members by which pressure is applied in opposite directions to the cylinder or to the shaft by which the cylinder is rotatably mounted in position. It is one of the objects of my invention to provide an arrangement of this type inwhich a. roller having an anti-friction mounting applies pressure laterally directly to the cylinder or its shaft, the construction being such that each of the bearings for the cylinder and for the roller individually has the desired tolerance or freedom even though the cylinder itself is rotatably mounted without tolerance or play.

It is one of the objects of my invention to provide a construction comprising a roller adapted to press against the side of a cylinder or its shaft for holding the shaft against the working faces of its main bearings, together with new and improved means for mounting said roller adjustably in position whereby upon wear of the bearings of the cylinder or wear of the roller or of its bearings such roller can be moved over for taking up such wear and preventing lost motion, serving thus to hold the cylinder continuously in a precisely regulated working position so as to prevent any change in position of the cylinder as the impression surface and the form pass into and out of operative engagement at the margins of the pages.

It is another object of my invention to provide an improved arrangement of supporting means for the cooperating members of a printing couple, at least one of which cooperating members is in the form of a cylinder, comprising anti-friction bearings for the principal support of said cylinder and auxiliary bearing or pressure means also having an anti-friction mounting .for applying pressure to a side of the cylinder or its shaft in the opposite direction from that in which the principal pressure is applied in operation through said main bearings, the

arrangement being such that the pressure is unyielding as applied in opposite directions to said cylinder, the tolerance required for easy operation being provided in the individual vbearings at the non-pressure sides of such bearings.

It is another object of my invention to provide an arrangement comprising aroller pressing against the side of the cylinder or its shaft for vholding the shaft against the working faces of its main bearings with such roller so mounted as to'be under t-he control of the means by which the requisite pressure is applied between the members of the printing couple for effective printing whereby the setting of the impression can be effected just as readily and expeditiously as would be the case if such pressure roller were not used. To this end, it is one of the objects of my invention to provide an improved arrangement comprising an eccentric for setting the impression, with the pressure roller adjustably mounted on said eccentric.

t is another object of my invention to improve mechanisms of this type in sundry details hereinafter pointed out. The preferred means by which I have accomplished my several objects are illustrated in the drawings and are hereinafter speciiically described. That which I believe to be new and desire to cover by Letters Patent is set forth in the claims.

In the drawings,-

Fig. l is vertical cross section through the bearings at one end of a form cylinder and cooperating impression cylinder with my improved construction incorporated therein, the cylinders being indicated diagrammatically ny dotted lines;

Fig. 2 is substantially section taken at line 2-2 of Fig. l; and

Fig. 3 is an enlarged detail View, being a perspective view of one of the eccentric pins by which pressure rollers are mounted in position to bear against the shafts of the cylinders.

Referring now to the several figures of the drawings, in which corresponding parts are indicated by the same reference characters, indicates frame bars in spaced relation to each other at opposite ends of form cylinder 11 and impression cyiindn 12 of any approved type. As is clearly shown in Fig. 2 which shows the frame-work at one side of the press, the form cylinder 11 is mounted in position by means of a shaft 13, and the impression cylinder 12 is mounted in position by means of a shaft 14. In the construction shown, the shaft 13 is mounted in diagonally spaced position with respect to the shaft 14, being mounted above and to one side, the arrangement being such that a considerable portion of the weight of the fom cylinder 11 is brought to bear upon the impression cylinder 12.

In the construction shown, the shaft 14 is su d at each end by means of two roller devices 15 which are fixedly mounted in position in spaced relation to each other at opposite sides of a bearer ring 16. In the commotion shown, the bearer ring 16 is formed as a part of a unit construction compricing the two bearings, the inner sleeve portions of the roller bearings being interposed between the ring 16 and the shaft 14. This constrnctii is merely incidental, however, the bearings 15 being in effect entirely seplrated from each other with the bearer 16 mounted in effect between the bearings on the shaft 14.

The shaft 13 of the form cylinder is mounted in position in similar manner, except that in connection with the form c linder an eccentric device 17 is used in a dition. That is to say, the shaft 13 is supported by roller bearings 18 in spaced relation longitudinally of the shaft with a bearer ring 19 mounted on the shaft between the roller bearings, the roller bearings 18 being mounted within the eccentric device 17 rather than Within the frame 10, auch eccentric device 17 constituting an "5' adjustable bearing box for the roller bearing device 18.y

In connection with each of the shafts 14 and 13, in the construction shown, the means for holding the roller bearings in position in the frame comprises a bearing cap 20 at one side of the shaft rigidly held in position by any suitable means not shown, the cap 20 in connection with the shaft 13 having its bearing, of course, against the eccentric device 17.

The pressure between the form cylinder 1l and the impression cylinder 12 is controlled by the manipulation of the eccentric device 1 in the well understood manner by a rotary movement of the eccentric in either direction for moving the cylinder 11 toward or from the cylinder 12, such rotary movement of the eccentric 17 being effected in the construction shown by means of a worm 21 formed on :i

pin 22 revolubly mounted in a suitable socket in the cap 20, such worm 21 having operative engagement with winm gear teeth formed directly upon one side portion of the eccentric 17. The pin 22 is provided upon its upper end with a squared head 23 by which it is adapted to be rotated by the use of any suitable tool, the. arrangement being such that the eccentric 17 is readily turned by moans of the worm but is locked strongly in position against turning independently of )owcr applied from an external source to t e pin 22'.

Means is provided for pressing the shaft 14 downwardly and toward the left in Fig. 1 and for pressing the shaft 13 upwardly and toward the right. This means comprises untifriction pressure rollers engaging the bearers 16 and 19 respectively, such anti-friction bearing devices being mounted in a chamber cored out in the frame-work 10 opposite the position of the bearers 16 and 19 respectively. The anti-friction bearing device engaging the bearer 16 mounted on the shaft 14 is adjustably mounted directly upon the frame 10, while the anti-friction bearing device engaging the bearer 19 is mounted between lugs 24 carried by the eccentric device 17 at one side thereof, the chamber in the frame 10 at this point being made large enough to accommodate the presence of such lugs 24 and to provide for the circumferential adjustment of the anti-friction bearing device therein as the eccentric 1T is shifted for setting the impression.

Each of said anti-friction bearing devices engaging the bearers 16 and 19 is adjustably mounted in position by means of a pin or rock shaft 25, one of said pins being mounted in the parts of the frame 10 at opposite sides of the anti-friction-bearing device, and the other pin 25 being mounted in the lugs 24. Each of the pins 25 is held in adjusted position by means of a set screw 26, as is clearly shown in Fig. 1. Each of the pins 25 is provided at one end portion with a socket 27 by means of which the pin is adapted to be turned by the use of a suitable tool. As is best shown in Fig. 3, each of the pins 25 has its intermediate portion 28 in offset or eccentric position with respect to its end portions whereby upon a rotary movement of such pin or rock shaft the anti-friction bearing devices are moved toward and from the bearers 16 and 19.

Each of the anti-friction bearing devices For adjusting the set screws 26 when the J ings 32 and 33 in the frame 10 as is clearly shown in Fig. 1.

With the anti-friction bearing devices comprising the rings or rollers 30 adjusted so as to bear tightly against the bearers 16 and 19, the shafts 13 and 14 are held against movement toward each other. The adjustment of the roller 30 tightly against the ,j the shaft at the side of said bearing 18 farthest away from the roller 30. rlhe shaft 13 is accordingly held rotatably in position without any tolerance, but it is free to rotate without danger of binding or heating since each of the anti-friction devices has ample play at its non-pressure side. In the same way the adjustment of the other roller 30 tightly against the bearer 16 serves to hold the shaft 14C rotatably in position without any tolerance, the tolerance at the non-pressure sides of the anti-friction devices serving to assure freedom of rotation.

Under such circumstances when the break between two plates on the form cylinder 11 comes opposite the impression cylinder 12, so as temporarily to relieve the pressure between the two cylinders, the shafts 14 and 13 are held rmly against any movement toward each other by reason of the engagement of the rollers 30 with the bearers 16 and 19. The cylinders 11 and 12 can accordingly be driven at high speed without danger of any pounding of one cylinder on the other at any time in the engagement between the cylinders.

By the use of my improved construction, in which the two cylinders of the printing couple are held rotatably in position without tolerance, the cylinders can be driven safely at such speeds as are now demanded by newspaper pressmen. By the use of antifriction bearings throughout, the wear upon the parts is kept to a minimum, and such wear as takes place can be very readily taken up by suitable adjustment of the rock shafts 25. Inasmuch as such adjustment is designed to take up snugly all of the play or tolerance at one side of each of the several antifriction bearing mechanisms, the adjustment can be very readily effected by any skilled mechanic, such adjustment being made from time to time as may be necessary.

So far as I am aware, I am the firstin the art to provide two oppositely pressed anti-friction bearing devices bearing upon a form cylinder or its shaft for taking up all tolerance with respect to lateral movement of the cylinder, and I desire that my claims be considered accordingly.

While I prefer to employ substantially the construction as shown in my drawings and as yabove described, itr is to be understood that I do not limit my invention thereto except so far as the claims may be so limited by the prior art.

I yclaim Y 1. A printing press, comprising in combination a printing couple at least one member of which is in the form of a cylinder, a shaft on which said cylinder is mounted, anti-friction'bearings for said shaft for supporting the cylinder pressed into operative impression relationship with the oth-er member of the couple, and other anti-friction bearing means for applying pressure to said cylinder in the opposite direction from that in which pressure is applied by said first named bea-rings serving to hold the shaft against the working faces of said first named bearings.

2. A. printing press, comprising in combination a printing couple at least one member of which is in the form of a cylinder, a shaft on which said cylinder is mounted, roller bearings for said shaft for supporting the cylinder pressed into operative impression relationship with the other member of the couple, and auxiliary anti-friction bearing means adjustable with respect to said cylinder for applying pressure thereto in the opposite direction from that in which pressure is applied by said first named bearings serving to hold the shaft against the worlring faces of saidfirst named bearings.

3. A printing press, comprising in combination a printing couple at least one member of which is in the form of a cylinder, a shaft on which said cylinder is mounted, bearings for said shaft for supporting the cylinder pressed into operative impression relationship with the other member of the couple, and a roller revolubly mounted in position by means of anti-friction bearing devices for applyingy pressure to said cylinder in the opposite direction from that in which pressure is applied by said first named bearings serving to hold the shaft against the working faces of said first named bearings.

t. A. printing press, comprising in combination a printing couple at least one member of which is in theform of a cylinder, a shaft on which said cylinder is mounted, bearings for said shaft for supporting the cylinder pressed into operative impression relationship with the other member of the couple, abearer rigidly mounted in concentric position with respect to said cylinder, and a roller revolubly mounted in position by means of anti-friction bearing devices for applying pressure to said bearer in the opposite direction from that in which pressure is applied to said cylinder by said first named bearings serving to hold the shaft against the working faces of said first named bearings.

5. A printing press, comprising in combinations. printing couple at least one member of which is in the form of a cylinder, a shaft on which said cylinder is mounted, bearings for said shaft for supporting the cylinder pressed into operative impression relationship With the other member of the couple, a bearer rigidly mounted on said shaft in spaced relation to the body of the cylinder but in concentric position with respect thereto, and a roller revolubly mounted in position in engagement with said bearer for applying pressure thereto in the opposite direction from that in which pressure is applied to said cylinder by said first named bearings serving to hold the shaft against the working faces of said first named bearings.

6. A printing press, comprising in combination a printing couple at least one member of which is in the form of a cylinder, a shaft .e on which said cylinder is mounted, bearings for said shaft for supporting the cylinder pressed into operative impression relationship with the other member of the couple, and a roller revolubly mounted in position by means of anti-friction bearingr devices for applying pressure to said cylinder in the opposite direction from that in which pressure is applied by said first named bearings and ad'ustable toward and from the axis of said cy 'nder serving to hold the shaft continuously against the working faces of said first named earing as adjustment is effected following wear.

7. A printing press, comprising in combination a printing couple at least one member of which is in the form of a cylinder, a shaft on which said cylinder is mounted, bearings for said shaft for supporting the cylinder pressed into operative impression relationship with the other member of the couple, a rock shaft mounted adjustably in position in spaced relation to the axis of said cylinder, and a roller revolubly mounted by means of anti-friction bearing devices on an eccentric bearing portion of said rock shaft for applying pressure to said cylinder in the opposite direction from that in which pressure is applied by said first named bearings serving to hold the shaft against the working faces of said first named bearings.

8. A printing press, comprising in combination a printing couple at least one meinber of which is in the form of a cylinder, a shaft on which said cylinder is mounted,

bearings for said shaft for supporting the cylinder pressed into operative impression relationship With the other member of the couple, a bearer rigidly mounted in concentric position with respect to said cylinder, and a roller revolubly mounted in position by means of anti-friction bearing devices for applying pressure to said cylinder in the opposite direction from that in which pressure is applied to said cylinder by said first named bearings and adjustable `toward and Vfrom the axis of said cylinder serving to hold the shaft continuously against the working faces of said bearings as Wear progresses. l

9. A printing press, comprising in combination a printing couple at least one member of which is in the form of a cylinder, a shaft on which said cylinder is mounted, anti-friction bearings for said shaft in spaced relation to each other at each end of the cylinder for supporting the cylinder strongly in position pressed into operative impression relationship with the other member of the couple, and other anti-friction bearing means for applying pressure to said cylinder located between the spaced bearings at each end of the cylinder for holding the cylinder in spaced relation to tbe coacting member of the printing couple serving to hold the shaft against the working faces of said first nam-ed bearings.

10. A printing press, comprising in combination a printing couple at least one member of which is in he form of a cylinder, a shaft on which said cyinder is mounted, anti-friction bearings for said shaft in spaced relation to eachV other at each end of the cylinder for supporting the cylinder strongly in position pressed into operative impression relationship wili the other member of the couple, a bearer rA `diy mounted on said shaft between said )acc-d bearings at each end of the cylinder, and other anti-:friction bearing means for appr pressuife to said bearer for holding the cy inder in spaced relation to the coacting member of the printing couple serving to hoid the shaft against the working faces oi said firs-it named bearings. l

11. A printing press, comprising in combination a printing couple at least one member of which in the form of a cylinder, a shaft on which said cylinder mounted, anti-friction bearings for said siiaft in spaced relation to each other at each end of the cylinder for supporting the cylinder .strongly in position pressed into operative impression relationship with the olier member of the couple, a bearer rigidly mounted on said shaft between said spaced bearings at cach end of the cylinder, and rollers revolubly mounted in position by mains of anti-friction bearing devices and adjustable toward and from the axis of said cylinder for applying pressure to said cylinder in Ahe opposite direction from that in which pressure is applied by said first named bearings serving to hold the shaft against the vmiking faces of said first named bearings.

12. A printing press7 comprising in. combination a printing couple at least one niember of which is in the form of a cylinderI` a shaft on which said cylinder is mounted, bearing boxes for said shaft adjustable with respect to the other member of said printj ustable there y la, into opera..1 f-

resnect to s L y member orp the p Tinting couple, and lier ant motion bearing means also carried by said bearing boXes for applying pressure t cylinder inthe opposite dir i-on ir which pressure is apned bearings serving j me Werl-:ing i'aces nd bearings. g press, comprising in combination a prn ing couple at least one member or. which it is the term of cylinder, a shaft on Which said cylinder is mounted, eccentric bearing bores for said shaft revolubly mounted on a xed axis with respect to the other niemeer of said printing couple, tWo sets of anti-friction bearings for said shaft carried by each ot the eccentrics in spaced relation to each other for supporting the cylinder strongly in position pressed into operative impression relationship with the other member ot the couple, a bearer rigidly mounted on said shaft between the spaced bearings at each end of the cylinder, and rollers revolubly mounted on said eccentrics by means of anti-friction bearing devices and adjustable toward and from the axis of the cylinder for applying pressure to said cylinder by engagement with said bearers for holding the cylinder in spaced relation to the coacting member of the printing couple serving to hold the shaft against the Working faces of said iii-st named bearings.

la. In a rotary printing machine, a printing couple comprising a form cylinder and an impression cylinder, journals on the cylinders, bearings vfor the journals, roller Ways on the cylinders concentric with their axes, and rollers arranged to bear against the roller ways and thereby iold the journals against the outer sides of the bearings.

l5. ln a rotary printing machine, a printing couple comprising a form cylinder and an impressioncylinder, journals for the cylinders, journal bearings adapted to maintain pressure between the cylinders, and means to press the journals against their bearings in a direction substantially the same as the direction or" the pressure due to their normal load; said means including roller Ways on the cylinders concentric with their axes and rollers arranged to bear against the roller Ways.

16. ln a rotary printing machine, a printing couple comprising a form cylinder and an impression cylinder, ournals on the cylinders, journal bearings adapted to maintain pressure between the cylinders, and means to impose a separate and continuo-us pressure on the journals tending to separate the cylinders; said means including roller Ways on the cylinders concentric With their axes and rollers arranged to bear against the roller Ways.

17. In a printing press, the combination of a printing couple at least one member of Which is in the form of a cylinder, journals on said cylinder, roller bearing devices for supporting said journals and for pressing said cylinder into operative impression relationship with the other member of said couple, and auxiliary roller bearing devices adjustably mounted in position for `applying pressure electively upon said cylinder in the o-pposite direction from that in which pressure is applied to the cylinder by said first named roller bearing devices serving to hold the journals positively against the Working faces of said first named roller bearing devices.

MARTIN W. BRUESHABER. 

